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Questions about Plasma Probing, MCS vs WCS, Inch vs MM, etc

Discussion in 'CNC Mills/Routers' started by fflen, Apr 30, 2024.

  1. fflen

    fflen New
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    I am new at this and i am having problems trying to run your first plasma program, I believe all my problems are in the probing first I had to change the $6 setting to Disable or the floating head switch would trigger now the z axis goes plus and triggers the z axis switch.I having trouble understanding the different things that set different locations. I can set home with the limit switches set work start but I don't get G53 or how to set G54-G59.
    I set my under the water pan braces on their side like Dr Flow to give me more room. Thats probably what messed the probing up but I did make changes in the code to try to control the z height but nothing worked. I am going to change the cross bracing back to original height. Also I would like to work in inches. Looking at the software sometimes it reads G21 sometimes G20 then the G code is in mm it's very confusing too me. Do I have to start for the beginning in inches, but then The Control screen does the calculations mm to inches but doesn't change it in the G code.
    I need help Thank You
    I found a small jumper bagged in with my SD card do I need that plugged into my Black Box.
    I would like to add proximity switches NPN is this right Brown to your Red, Black to your Blue and Brown to your Blue. 6V to 36V

    GCODE Parser ] GCODE File (from gcode editor) sent to backend

    [13:11:41] [ G21 ] ok

    [13:11:41] [ $G ] [GC:G0 G54 G17 G21 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [13:11:41] [ $G ] ok

    [13:11:41] [ G54 ] ok

    [13:11:41] [ $G ] [GC:G0 G54 G17 G21 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [13:11:41] [ $G ] ok

    [13:11:41] [ G20 ] ok

    [13:11:41] [ $G ] [GC:G0 G54 G17 G20 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [13:11:41] [ $G ] ok

    [13:11:41] [ G90 ] ok

    [13:11:41] [ $G ] [GC:G0 G54 G17 G20 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [13:11:41] [ $G ] ok

    [13:11:41] [ G0 Z10 ] ok

    [13:11:41] [ G0 F1000 X141.9208 Y77.2406 ] ok

    [13:11:43] [ ALARM ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ G38.2 Z-30 F500 ]

    [13:11:43] [ ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ G38.2 Z-30 F500 ]

    [13:11:43] [ G38.2 Z-30 F500 ] ALARM:1

    [13:11:45] [ ] GrblHAL 1.1f ['$' or '$HELP' for help]

    [13:11:45] [ ] [MSG:'$H'|'$X' to unlock]

    [13:11:46] [ ] [MSG:Caution: Unlocked]

    [13:11:46] [ JOB COMPLETE ] Job completed in 00h00m

    It was homed just before it ran this.
     
    #1 fflen, Apr 30, 2024
    Last edited: Apr 30, 2024
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Homing sets G53. Your jogging+SetZero (Or XYZ probing) sets Work Coordinates
    docs:software:openbuilds-control [OpenBuilds Documentation] (Section 6.1 vs 6.2)

    OpenBuilds CAM is Metric only.
    OpenBuilds CONTROL supports both (you can have your view set to Inch Mode and still run Metric gcode, the controller would know what to do)


    If none of the documentation you read asked you to, no. It also doesn't go in the BlackBox (Its for people retrofitting old Interfaces to go with the new BlackBox - jumper included for everyone for a while to avoid the need to ship one to them later - mainly catering for people who had the old BlackBox4X+Interface, and then ordered a BlackBoxX32 as a nice upgrade but wanted to keep the old Interface they already had)


    See docs:blackbox-x32:connect-npn-inductive [OpenBuilds Documentation] but cross reference your sensors datasheets, colors aren't always consistent. GND=0V, V+=24V (with the jumper on 24v) and SIG is well the input signal. Ignore colors, pay attention to labels I'd say
     
  3. fflen

    fflen New
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    Just read your reply I was adding my log to my post.
    can you tell why as soon as I start your new plasma program the z axis jumps up and triggers the limit switch. I have been fighting this for a few days and can't get by that line.
    Thanks
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    What kind of machine did you use as a base? LEAD1010? (Easy option, use the Add-on )

    What CAM are you using?
    If its OpenBuildsCONTROL - check Settings > Settings > Advanced > Touch off macro (paste what you have for review)
    and also toolpath parameters (Or try the Hello World wrench guy project)

     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    You got a Z limit error on a Probe. Sounds like you have your Probe switch plugged into your Z Limit input instead of the Probe port?
    Or your machine isn't moving right? Or you didn't setZero? Watch the video above
     
  6. fflen

    fflen New
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    It's a 1010 with plasma add on the probe is plugged in probe. I just homed it then jogged to work area zero it hit run z axis goes + triggers alarm 38.2 z-30 F500. I had to change $6 setting to "Disable" or the floating head switch would always show triggered. This is your new plasma program. I put $6 back to "Enable" it shows triggered when the head is down. Looking at the troubleshooter in the video it shows probe not triggered mine show triggered. 4 min into the video he pushes up on the head and says the red light is coming on, pushing up on mine the light turns off. Should the probe switch be NC.
    Thanks
     
    #6 fflen, Apr 30, 2024
    Last edited: Apr 30, 2024
  7. fflen

    fflen New
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    After watching the video a few times I noticed that when looking at troubleshooting the probe is not triggered that why I changed my $6 setting. Should my probe switch be normally closed . Because in the video he says while pushing the head up that the switch is lighting up, mines on until you push it up, just the opposite.
     
  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    That depends how you mounted the switch. Dr D flo has it like yours. Ours allows more float.
    Ours rests on the switch while tip is up in the air (closing the NO switch). touching tip picks it up off the switch opening it

    $6 is set such that it shows TrIggered when you probe downward.
     
  9. fflen

    fflen New
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    I set the table up just like your video said to. The only difference was laying supports under the pan on there sides like Dr D Flow. When it first triggered the z axis limit switch I added some small pieces of wood to bring the work surface up to your height still triggers the limit switch. I also played with the numbers in the G code still triggered the switch. In your video it seam like my limit switch acts just the opposite. I'll send some pictures. I did watch Dr D Flow's video and I see what you mean but mine is set up just like your video. Mine probe switch is showing triggered when off the work surface.
     
    #9 fflen, May 1, 2024
    Last edited: May 1, 2024
  10. fflen

    fflen New
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    I can't see how having the under the pan braces on their side won't work but I'll change them right now.

    Thank You
     

    Attached Files:

  11. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Ahh ok so its its the Plasma Add on!
    As you were changing settings manually etc in the first post I kinda assumed it was a self-built machine

    OK so for our Add-on you just need

    • CONTROL V1.0.374
    • Grbl Settings tab > Select the Add on from the list > save and reset
    • Test the machine. Z- jogs downward, Z+ jogs up? etc? All distances still correct (Jogging 10mm moves 10mm?)
    • OpenBuilds CAM > Settings > Settings
    • Select LEAD1010 and tick the Plasma Add-on. Don't edit the macro. Macro would only change for different probe configurations
    • Try the Hello World. Make sure to SETZERO with the tip down near the stock, and on the XY front left corner
    Our profile in the Grbl Settings tab would set that correct for you, no need to change it.

    Probing is the distance between switch clicking and bit touching. For the add-on thats always going to be +-3mm. The relative distance to the bottom has no relation.


    Make sure you didn't zero Z while it was still too high, that block of wood looks like you got the tip quite high up. The toolpath needs some clearance to move around above the stock - at least 10mm for Z-Safe above your zero point, a little more would help. Zeroing too high will hit the switch during the Z10 Safe Moves



    upload_2024-5-1_21-33-34.png
     
  12. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    upload_2024-5-1_21-36-48.png

    Also check how you mounted the Z-switch, Should hit the roller, here its already lit up and the screw is pressing on your lever's hinge - that will damage the switch in no time - rip the arm out of the hinge
     
  13. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Lighting up in CONTROL. Yes. Triggered when the tip pushes up and releases switch

    During the downward probe, tip hits, float starts floating, switch releases.

    LED on switch itself will be lit when tip is in the air (as float hangs on switch, its pressing switch closed, led is ON)
     
  14. fflen

    fflen New
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    OK I have done all that and everything didn't but I will do it again I was just putting back everything together for the pictures just wanted you to see when the torch is just hanging the probe light is on and and listed as triggered. I am just getting everything back together with the supports under the pan just like the video. Before I do exactly what you asked is there a way to cancel all of the saved coordinate locations so I am starting fresh.
    The wood was just to get me to the height in the video and I zeroed it way minus the wood moved the z limit switch to the max plus travel.
     
  15. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    When its hanging LED on, but should not be Triggered. Use the Profile provided :)


    There is, but ...
    But that's not it. Not the source of your issue. OpenBuildsCAM doesn't use coordinate systems. it JUST uses G54 Work coordinates. It just needs you to zero the stock before running the job thats all.

    You mentioned you changed the macro, what do you have in there now? (copy paste)
    Sample gcode that did the bad move?
     
  16. fflen

    fflen New
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    90; Absolute Positioning

    ; Operation 0: Plasma: Vector (path inside)
    ; Plasma Kerf: 1.2

    G0 Z10; move to z-safe height
    G0 F1000 X141.9208 Y77.2406
    G38.2 Z-30 F500; Touch off Probe
    G10 L20 Z-3; Set Z Zero


    G0 Z4; Move to Pierce Height I changed z-30 but put it back it didn't help
    I made so many changes I reinstalled the software tryed to home and it went -z into the pan.
     
  17. fflen

    fflen New
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    Changed the z direction and it homes ok but when I hit run it goes +z hits limit switch.


    [14:24:27] [ ] ok

    [14:24:32] [ $J=G91 G21 Y-1000 F3000 ] ok

    [14:24:33] [ $J=G91 G21 X1000 F3000 ] ok

    [14:24:37] [ G10 P0 L20 X0 Y0 Z0 ] ok

    [14:24:42] [ $J=G91 G21 Z-1000 F1500 ] ok

    [14:24:44] [ $J=G91 G21 Z-1000 F1500 ] ok

    [14:24:45] [ $J=G91 G21 Z-1000 F1500 ] ok

    [14:24:48] [ G10 P0 L20 Z0 ] ok

    [14:24:57] [ GCODE Parser ] GCODE File (from gcode editor) sent to backend

    [14:24:57] [ G21 ] ok

    [14:24:57] [ $G ] [GC:G0 G54 G17 G21 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [14:24:57] [ $G ] ok

    [14:24:57] [ G54 ] ok

    [14:24:57] [ $G ] [GC:G0 G54 G17 G21 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [14:24:57] [ $G ] ok

    [14:24:57] [ G20 ] ok

    [14:24:57] [ $G ] [GC:G0 G54 G17 G20 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [14:24:57] [ $G ] ok

    [14:24:57] [ G90 ] ok

    [14:24:57] [ $G ] [GC:G0 G54 G17 G20 G90 G94 G49 G98 G50 M5 M9 T0 F0 S0.]

    [14:24:57] [ $G ] ok

    [14:24:57] [ G0 Z10 ] ok

    [14:24:57] [ G0 F1000 X141.9208 Y77.2406 ] ok

    [14:24:58] [ ALARM ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ G38.2 Z-30 F500 ]

    [14:24:58] [ ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ G38.2 Z-30 F500 ]

    [14:24:58] [ G38.2 Z-30 F500 ] ALARM:1

    [14:25:02] [ ] GrblHAL 1.1f ['$' or '$HELP' for help]

    [14:25:02] [ ] [MSG:'$H'|'$X' to unlock]

    [14:25:02] [ ] [MSG:Caution: Unlocked]

    [14:25:02] [ JOB COMPLETE ] Job completed in 00h00m

    [14:25:02] [ ] ok
     
  18. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Cuts off the header... Hard to review Partials like this. Just post the file completely as a attachment (next time). When we want to review your gcode we'd want all of it. Header, job, footer, all intact. Not edited or cropped out and missing bits. Not pasted either that makes the thread unreadable. Use the Upload a file button to attach.

    Log shows some of what was cut off in the gcode sample at least.

    Theres the problem - a G20! Moving 10 inches up will hit the switch! Its supposed to be a 10mm Z safe move.

    CAM is Metric Only. As mentioned above. Our standard header has always included a G21.

    You changed the G21 to a G20. Fix that back to a G21 and it will work as it should. Probably changed it in CAM > Settings tab > Settings button > Advanced > Gcode header (no need to go dig in that deep, not for normal users, thats advanced modification capabilities)
     
  19. fflen

    fflen New
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    I took the z limit switch off, I wanted to see just how far the z axis would go, when I hit run the bottom z axis bearing plate hit on the gantry plate thats why I changed the z-30 value thinking it wouldn't go as far. When I see z 10 is that 10mm from z work coordinate. I don't know how this all works yet I am trying to learn, so what makes the z axis go so high even if I zero it minus the work surface it still hits the z axis limit switch. What about the torch head mine is a hand held the one in the video was a CNC straight torch. If I zero the torch head on the work its about 23mm to the z limit switch.
    Thanks
     
  20. fflen

    fflen New
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    Its in the settings thats why I asked about it yesterday if inches could be used. I playing around in cam trying to learn it and I think I did change it to inches some where in the cam software but I didn't know that it would change the G code and the advance settings I thought you guys put it there. If you change it in the G code should it save it in the advance settings. I saw it in the control g code too.
    It works just fine after changing it to mm. So I can work in inches but it can't be in the G code right? I can't believe over a week of taking the table apart Homing over and over, searching on your site and forum and your time also for one G21.

    Thanks for your time
    I have a few classic cars I'll be using the plasma for probably just cutting out simple brackets so hopefully I won't have to learn a lot of code but I will be looking for G21 before I cut anything thanks again.
     
  21. fflen

    fflen New
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    I don't know how I did this.
    upload_2024-5-1_16-50-41.png
     
  22. fflen

    fflen New
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    Still can't find out how to start a new thread. I have the Hynade 60DN, 1010 add on Black Box 32. what pins do I connect to #1relay. Plasma connection is 1/2 Start control signal 3/4 Arc starting signal. First cut video shows connecting to a CNC torch that comes with the cable made up they just say plug it in. I made up the cable but can't find what pins on the plasma or the relay to connect to.

    Thanks


    Ok found video that says 1/2
    Relay says com/No now I just need which one goes to com / No
     
    #22 fflen, May 2, 2024
    Last edited: May 2, 2024
  23. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Its no worry, you can keep going here (still related after all, and helps to see your other history at a glance)
    But for future reference, basically go to the Forums tab above > Pick a category > Click Post New Thread Button
    upload_2024-5-2_23-11-0.png





    Thats the one for the Relay. 3/4 not used (More advanced machines with THC only)
     
  24. fflen

    fflen New
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    Does it matter witch one connects to com and witch one connects to No?
     
  25. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    It does not.
     
  26. fflen

    fflen New
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    Thanks just trying to be careful I don't want to fry anything.
     
  27. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    I appreciate that. Rather ask a million times :) - Once the magic smoke comes out you can't put it back in
     

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